Acura 2012 TL - Manual (Page 492)

If there is a problem with the
starting system, you will see a
‘‘CHECK STARTING SYSTEM’’
message on the multi-information
display when the ignition switch is
turned to the ON (II) position. You
will also see this message when the
auto control mode of the starting
system has a problem.
If this message is on, the ignition
switch has to be held in the START
(III) position manually until the
engine starts. The ignition switch
can be held in that position up to 15
seconds.
Even though you may be able to
start the engine manually without
the auto control mode of the starting
system, have your vehicle inspected
by a dealer.
Check Starting System Message
Starting the Engine (Models without Keyless Access System)
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2012 TL